overwintering overwintered rocotto orange

[Itoero]

I have a rocotto orange which stood on my aunts terras the entire winter.
It did not freeze, it only got 0°C a couple nights.
 
How can I revive him?
Sghould I prune some roots and put him in new airy potting soil?
I've already pruned all the dead branches.

 
 
 
 

 

[Nightshade]

put him in good light with warmth

 

[birdfather]

i'd wait till you see some growth and cut it back some more, to the lowest new growth. that's what i do, but never grown c. pubescens